Coal overflow prevention device

Abstract

The utility model discloses a coal overflow prevention device, and relates to the technical field of coal mining, in particular to a coal overflow prevention device which comprises a coal falling barrel body, a connecting opening for a material conveying mechanism to convey materials is formed in the outer side of the top end of the coal falling barrel body, and a discharging cavity is vertically formed in the coal falling barrel body in a penetrating mode. A plurality of first-stage blockage warning devices are arranged on the inner wall of the bottom end of the discharging cavity, each first-stage blockage warning device comprises a slope driving block, a transmission column and a first-stage early warning column, one side of each slope driving block is movably connected with the corresponding transmission column, and one end of each transmission column is connected with the corresponding first-stage early warning column through a shaft pin; the first-level early warning column is connected with the coal falling barrel body through a shaft pin. According to the coal overflow prevention device, when blockage occurs in the discharging cavity and a mercury switch in the first-stage blockage warning device inclines, preliminary warning is conducted at the moment, and when coal in the discharging cavity overflows to the transfer cavity, a second-stage blockage warning device gives out warning at the moment.

Description

Technical Field

[0001] The utility model relates to the technical field of coal mining, in particular to an anti-overflow coal device. Background Technique

[0002] In the coal conveying system, a coal conveying belt is often used in cooperation with a coal dropping cylinder to convey coal raw materials to a coal conveying pipeline. The coal dropping cylinder is an important conveying device in the coal conveying system. The coal dropping cylinder is a coal flow conveying channel that avoids excessive dust generation during the falling process of the coal flow and plays a role in guiding or diverting the coal flow during the falling process. Due to reasons such as high moisture content of the coal quality, the coal dropping cylinder is severely blocked during the coal feeding process of the coal conveying system. Once the blockage of the coal dropping cylinder is not discovered in time, the coal conveying belt upstream will overflow with coal, which will further cause equipment damage. Therefore, it is necessary to have a special person on-site to monitor the blockage of the coal dropping cylinder. Once the coal dropping cylinder is blocked, the on-site duty personnel immediately manually operate to stop coal feeding, making its use not very convenient. For this reason, we have proposed an anti-overflow coal device. Content of the Utility Model

[0003] The utility model provides an anti-overflow coal device, which solves the problems raised in the above background technique.

[0004] To achieve the above purposes, the utility model is realized through the following technical solutions: an anti-overflow coal device, including a coal dropping cylinder main body, a connection port for the feeding mechanism to convey materials is opened on the outer side of the top of the coal dropping cylinder main body, and a feeding cavity is vertically penetrated inside the coal dropping cylinder main body. A plurality of primary blockage warning devices are arranged on the inner wall of the bottom end of the feeding cavity. The primary blockage warning device includes an inclined plane driving block, a transmission column, and a primary warning column. One side of the inclined plane driving block is movably connected to the transmission column. One end of the transmission column is connected to the primary warning column through a shaft pin. The primary warning column is connected to the coal dropping cylinder main body through a shaft pin. A mercury switch is arranged inside the primary warning column. When the coal is blocked, the inclined plane driving block moves, and finally the primary warning column tilts, and the contact inside the mercury switch is disconnected, warning of coal blockage. A transfer cavity is arranged on the outer side of the top end of the feeding cavity. A secondary blockage warning device is arranged inside the transfer cavity. The secondary blockage warning device includes a linkage ring, a secondary warning column, and a bearing plate. One side of the linkage ring is in contact with the secondary warning column, and the bottom end of the secondary warning column is fixed to the bearing plate. A mercury switch is arranged inside the linkage ring. When the bearing plate bears coal, the linkage ring moves downward to push the secondary warning column to tilt, and the contact inside the mercury switch is disconnected, warning of coal blockage.

[0005] Optionally, a connection cavity is opened at the top of the coal dropping cylinder main body. The connection port is communicated with the connection cavity, and the feeding cavity and the transfer cavity are communicated with the connection cavity. When the coal in the feeding cavity overflows, the coal accumulates in the transfer cavity.

[0006] Optionally, the inclined plane drive block is movably connected to the coal dropping cylinder body, and a spring is fixedly connected to one side of the inclined plane drive block, and one end of the spring is fixed to the coal dropping cylinder body.

[0007] Optionally, a dust suction port communicating with a dust collector is provided at the top end of the coal dropping cylinder body, and the dust suction port communicates with the connection cavity.

[0008] Optionally, a support column is fixedly connected to the inner wall of the transfer cavity, one end of the support column is fixedly connected to a partitioned annular cylinder, a transfer cavity is formed between the partitioned annular cylinder and the inner wall of the coal dropping cylinder body, and a contact plate is movably connected to the bottom end of the transfer cavity.

[0009] Optionally, a positioning column is fixedly connected to the top end of the contact plate, a bearing plate is movably connected to the top end of the positioning column, the top of the bearing plate is fixed to the bottom end of the linkage ring, the linkage ring is movably connected to the partitioned annular cylinder, the top end of the secondary warning column is connected to the partitioned annular cylinder through a shaft pin, the contact surface between the linkage ring and the secondary warning column is arc-shaped, and magnetic stones that attract each other are provided on the contact surface.

[0010] Optionally, a PLC controller and a sound alarm are provided on the coal dropping cylinder body, and the mercury switch and the sound alarm are both connected to the PLC controller.

[0011] The present utility model has the following beneficial effects:

[0012] 1. For this anti-overflow coal device, when a blockage occurs in the feeding cavity, the mercury switch inside the primary blockage warning device tilts, and at this time, a preliminary warning is given. When the coal in the feeding cavity overflows into the transfer cavity, the secondary blockage warning device gives a warning at this time, and the conveying mechanism is controlled by the PLC controller to stop, thereby effectively monitoring the coal, making its use more convenient.

[0013] 2. For this anti-overflow coal device, when the feeding cavity is filled with coal, the contact plate abuts against the coal inside the feeding cavity, and then the bearing plate can move relative to the positioning column. When the coal in the feeding cavity is dredged, the coal in the transfer cavity presses, causing the bearing plate to open, enabling the transfer cavity to communicate with the feeding cavity, and thus enabling the coal in the transfer cavity to fall smoothly. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic structural diagram of the present utility model;

[0015] Figure 2 is a schematic structural diagram of the connection of the support column of the present utility model;

[0016] Figure 3 is a schematic structural diagram of the connection of the linkage ring of the present utility model;

[0017] Figure 4 Schematic structural diagram of the connection of the inclined plane drive block of the present utility model;

[0018] Figure 5 Schematic structural diagram of the position A of the present utility model;

[0019] Figure 6 Schematic structural diagram of the position B of the present utility model.

[0020] In the figure: 1, main body of coal dropping tube; 2, connection port; 3, connection cavity; 4, dust suction port; 5, blanking cavity; 6, inclined plane drive block; 7, transfer storage cavity; 8, partition ring cylinder; 9, support column; 10, linkage ring; 11, secondary warning column; 12, positioning column; 13, bearing plate; 14, abutting plate; 15, spring; 16, transmission column; 17, primary warning column. Specific embodiments

[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0022] Please refer to Figures 1 to 6, An anti-overflow coal device, including a coal dropping cylinder main body 1. An interface 2 for the feeding mechanism to convey materials is provided on the outer side of the top of the coal dropping cylinder main body 1. One end of the feeding mechanism extends into the interior of the coal dropping cylinder main body 1 through the interface 2, enabling the coal to smoothly fall into the feeding cavity 5. And a feeding cavity 5 is vertically penetrated inside the coal dropping cylinder main body 1. Through the feeding cavity 5, the coal can be smoothly fed. A plurality of primary blockage warning devices are provided on the inner wall at the bottom end of the feeding cavity 5. The primary blockage warning device includes an inclined plane driving block 6, a transmission column 16, and a primary warning column 17. One side of the inclined plane driving block 6 is movably connected to the transmission column 16. The transmission column 16 can move along a fixed trajectory on the inclined plane driving block 6. One end of the transmission column 16 is connected to the primary warning column 17 through a pin, enabling relative rotation between the transmission column 16 and the primary warning column 17. The primary warning column 17 is connected to the coal dropping cylinder main body 1 through a pin, enabling relative rotation between the coal dropping cylinder main body 1 and the primary warning column 17. Subsequently, the movement of the inclined plane driving block 6 and the transmission of the transmission column 16 cause the primary warning column 17 to tilt. A mercury switch is provided inside the primary warning column 17. When the coal is blocked, the inclined plane driving block 6 moves, ultimately causing the primary warning column 17 to tilt. The contacts inside the mercury switch are disconnected, warning of coal blockage. Through the tilt of the mercury, a break point is generated, making the monitoring more stable and accurate. A transfer cavity 7 is provided on the outer side of the top end of the feeding cavity 5. A secondary blockage warning device is arranged inside the transfer cavity 7. The secondary blockage warning device includes a linkage ring 10, a secondary warning column 11, and a bearing plate 13. One side of the linkage ring 10 is in contact with the secondary warning column 11, and the bottom end of the secondary warning column 11 is fixed to the bearing plate 13. A mercury switch is provided inside the linkage ring 10. When the bearing plate 13 bears coal, the linkage ring 10 moves downward to push the secondary warning column 11 to tilt. The contacts inside the mercury switch are disconnected, warning of coal blockage. When the coal in the feeding cavity 5 overflows, the coal falls into the transfer cavity 7, and then the coal accumulates on the bearing plate 13, causing the bearing plate 13 to pull the linkage ring 10 to move downward, further causing the secondary warning column 11 to tilt, and then warning of secondary blockage through the disconnection of the contacts of the mercury switch.

[0023] Please refer to Figures 1 to 5 , A connection cavity 3 is provided at the top of the coal dropping cylinder main body 1. The interface 2 is communicated with the connection cavity 3. The feeding cavity 5 and the transfer cavity 7 are communicated with the connection cavity 3. When the coal in the feeding cavity 5 overflows, the coal accumulates in the transfer cavity 7, enabling the overflowing coal in the feeding cavity 5 to be transferred and stored.

[0024] Please refer to Figures 1 to 6, the inclined plane driving block 6 is movably connected to the main body 1 of the coal dropping cylinder. The inclined plane driving block 6 can move on the main body 1 of the coal dropping cylinder along a fixed track. When coal accumulates in its material discharging cavity 5, under the action of the gravity of the coal, a force can be generated to push the inclined plane driving block 6 to move. And one side of the inclined plane driving block 6 is fixedly connected with a spring 15. One end of the spring 15 is fixed to the main body 1 of the coal dropping cylinder. Under the action of the elastic force of the spring 15, the inclined plane driving block 6 can return to its original position, so that the inclined plane driving block 6 can restore its detection function again.

[0025] Please refer to Figures 1 to 3 , a dust suction port 4 communicating with a dust collector is provided at the top end of the main body 1 of the coal dropping cylinder. The dust suction port 4 communicates with the connection cavity 3, and then it can suck dust, effectively reducing the dust generated by the coal.

[0026] Please refer to Figures 1 to 5 , a support column 9 is fixedly connected to the inner wall of the transfer cavity 7. One end of the support column 9 is fixedly connected with a partition ring cylinder 8. A transfer cavity 7 is formed between the partition ring cylinder 8 and the inner wall of the main body 1 of the coal dropping cylinder. The bottom end of the transfer cavity 7 is movably connected with an abutting plate 14. When the material discharging cavity 5 is filled with coal, the abutting plate 14 abuts against the coal, so that the bearing plate 13 can move relative to the abutting plate 14.

[0027] Please refer to Figures 1 to 5 , a positioning column 12 is fixedly connected to the top end of the abutting plate 14. The top end of the positioning column 12 is movably connected with a bearing plate 13. Under the limitation of the positioning column 12, the bearing plate 13 can move along a fixed track. The top of the bearing plate 13 is fixed to the bottom end of the linkage ring 10. Under the pulling of the bearing plate 13, the linkage ring 10 moves downward. The linkage ring 10 is movably connected with the partition ring cylinder 8. Under the limitation of the partition ring cylinder 8, the linkage ring 10 can move downward along a fixed track. The top end of the secondary warning column 11 is connected to the partition ring cylinder 8 through a pin, and then the partition ring cylinder 8 can rotate with the pin as the rotation axis. The contact surface between the linkage ring 10 and the secondary warning column 11 is arc-shaped. Then, with the movement of the linkage ring 10, the secondary warning column 11 can be tilted, and magnets that attract each other are provided on the contact surface. Then, the secondary warning column 11 can quickly return to the vertical state, and the vertical state of the secondary warning column 11 is limited.

[0028] Please refer to Figures 1 to 6, a PLC controller and a sound alarm are provided on the main body 1 of the coal dropping pipe. Both its mercury switch and the sound alarm are connected to the PLC controller. When the first-level warning column 17 is tilted, the sound alarm warns of coal blockage and transmits a signal to the PLC controller. The PLC controller controls the control terminal of the conveying mechanism to reduce the conveying speed. When the second-level warning column 11 is tilted, the sound alarm warns of coal blockage and transmits a signal to the PLC controller. The PLC controller controls the control terminal of the conveying mechanism to stop the conveying.

[0029] In summary, when the anti-overflow coal device is in use, the conveying mechanism conveys coal to the top of the blanking cavity 5 through the connection port 2. However, when a blockage occurs in the blanking cavity 5, the coal accumulated in the blanking cavity 5 presses downward on the inclined surface driving block 6, enabling the inclined surface driving block 6 to move relatively, and then pushing the transmission column 16 to move. Driven by the movement of the transmission column 16, at the same time, the transmission column 16 moves relative to the inclined surface driving block 6, enabling the first-level warning column 17 to rotate, causing the mercury switch to tilt, and the contacts in the mercury switch to disconnect. The sound alarm warns of coal blockage and transmits a signal to the PLC controller. The PLC controller controls the control terminal of the conveying mechanism to reduce the conveying speed. When the coal in the blanking cavity 5 is blocked and overflows into the transfer cavity 7, the coal accumulates on the bearing plate 13. The bearing plate 13 can move relative to the positioning column 12, and then pull the linkage ring 10 to move. The movement of the linkage ring 10 pushes the second-level warning column 11 to tilt, and the contacts in the mercury switch disconnect. The sound alarm warns of coal blockage and transmits a signal to the PLC controller. The PLC controller controls the control terminal of the conveying mechanism to stop the conveying.

[0030] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model; the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, unless otherwise clearly specified and defined, the terms "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations. Moreover, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or further includes elements inherent to such process, method, article or device.

[0031] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A coal overflow prevention device, comprising a coal dropper body (1), wherein a connection port (2) for a material delivery mechanism to deliver materials is provided on the outer side of the top of the coal dropper body (1), and a material delivery cavity (5) is vertically provided inside the coal dropper body (1), characterized in that: The inner wall at the bottom end of the material discharge chamber (5) is provided with a plurality of first-level blockage warning devices, the first-level blockage warning devices comprising an inclined plane driving block (6), a transmission column (16), and a first-level warning column (17). One side of the inclined plane driving block (6) is movably connected with the transmission column (16), one end of the transmission column (16) is connected with the first-level warning column (17) via an axle pin, the first-level warning column (17) is connected to the coal drop chute body (1) via the axle pin, and a mercury switch is provided in the first-level warning column (17). When coal is blocked, the inclined plane driving block (6) moves, and finally the first-level warning column (17) is tilted, and the contact in the mercury switch is disconnected. A transfer chamber (7) is arranged on the outer side of the top of the feed chamber (5) for warning coal blockage, and a secondary blockage warning device is arranged inside the transfer chamber (7). The secondary blockage warning device comprises a linkage ring (10), a secondary warning column (11), and a bearing plate (13). One side of the linkage ring (10) is in contact with the secondary warning column (11), and the bottom end of the secondary warning column (11) is fixed to the bearing plate (13). A mercury switch is arranged inside the linkage ring (10). When the bearing plate (13) carries coal, the linkage ring (10) moves downward to push the secondary warning column (11) to tilt, and the contact in the mercury switch is disconnected to warn of coal blockage.

2. A coal overflow prevention device according to claim 1, characterized in that: A connecting cavity (3) is provided at the top of the coal drop chute body (1); the connecting port (2) is in communication with the connecting cavity (3); the material drop cavity (5) and the transfer cavity (7) are in communication with the connecting cavity (3); when the material drop cavity (5) is full of coal, the coal falls into the transfer cavity (7).

3. A coal overflow prevention device according to claim 2, characterized in that: The inclined plane driving block (6) is movably connected to the coal dropping chute body (1), and a spring (15) is fixedly connected to one side of the inclined plane driving block (6), and one end of the spring (15) is fixed to the coal dropping chute body (1).

4. The coal overflow prevention device according to claim 3, characterized in that: A dust suction port (4) which can be connected to a dust collector is provided at the top of the coal drop chute body (1), and the dust suction port (4) is connected to the connecting chamber (3).

5. The coal overflow prevention device according to claim 4, characterized in that: The inner wall of the transfer chamber (7) is fixedly connected to a support column (9), one end of the support column (9) is fixedly connected to a separation ring tube (8), a transfer chamber (7) is formed between the separation ring tube (8) and the inner wall of the coal drop shaft body (1), and the bottom end of the transfer chamber (7) is movably connected to an abutment plate (14).

6. The coal overflow prevention device according to claim 5, characterized in that: The top end of the abutment plate (14) is fixedly connected to a positioning column (12), the top end of the positioning column (12) is movably connected to a bearing plate (13), the top of the bearing plate (13) is fixed to the bottom end of the linkage ring (10), the linkage ring (10) is movably connected to the separation ring cylinder (8), the top end of the secondary warning column (11) is connected to the separation ring cylinder (8) via an axle pin, the contact surface between the linkage ring (10) and the secondary warning column (11) is arc-shaped, and magnets that attract each other are provided on the contact surface.

7. The coal overflow prevention device according to claim 1, characterized in that: The coal drop hopper body (1) is provided with a PLC controller and a sound alarm, and the mercury switch and the sound alarm are both connected to the PLC controller.

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